Bush-box for spindles



(No Model.)

H. HEARD.

BUSH B0X PoR sPINDLBs.

Patented Ja.11.2,'1883.

P51519. mlonhogmwf. wumgmn. n4 c.

PATENT HENRY HEARD, OF GREENSBOROUGH, GEORGIA.

BUSH=BOX FR SPINDLES.

SPECIFICATION forming part of Letters Patent No. 269,854, dated January 2, 18 3.

Application filed June 6, 1882. (No model.)

1o all whom it may concern n Ile it known that I, HENRY HEARD, a citizen of the United States, and a resident of' Greensborough, Greene county, Georgia, have invented an Improved Bush-Box for Spindles, ot' which the following` i-s a specitication.

My invention is a bush-bearing for shafts or spindles, constructed as fully described hereinafter, to center andsupport the spindle, prevent straining and undue wear of the parts, secure a thorough lubrication, and reduce friction.

In the drawings, Figure l is a sectional elevation showing a shalt and bearing. The shalt may be that of a millstone or ofiany other machine or apparatus; and Fig. 2 is a cross-section ou the line 1 2, Fig. 1.

K is a cylindrical case or box, suitably supported according to the apparatus in which it is used, and having an annular bottom, mand inside vertical flange, a', threaded to carry an adjusting-sleeve, I, for the purposeherein'after described. y

BA is an inner casing or bushing having` two parallel sides or walls, b b', inclosing an oilchamber, X, and a tlange, b2, extending downward as a prolongation of the outer wall, ll', into an oil-chamber, X', inclosed between the side ot' the case K and its ange a. In the outer wall, b', of the bushing is a vertical slot, a', which receives a pin or feather on the casing K, so that the hns-hing can rise and fall freelyin the casing without turning. The wall b ot' the bushing has a conical outer face adapted to the corresponding face, z, of a collar, f', projecting downward from a sleeve, E, which is bolted firmly to the spindle, these coinciding conical faces being the bearing-faces, which are always submerged in the oil filling the chamber X in the bushing. A flange, e, extends from the collarf, and a ring or sleeve, F, is firmly secured by set-screws g within the bushing and with its lower end upon the liange e, and thereby prevents the bearing-face of the collar]` from rising from the face of the bushing when the sleeve E is caused to follow the vertical movements oi' the spindle to which it is attached.

By screwing up the adj Listing-sleeve I to the position shown in dotted lines, Fig. l, the bushing-maybe held in position until the ring F is secured in place. The sleeve I is then lowered.

Set-screws t (shown in dotted lines, Fig. 1,) may be substituted for the ring I.

The collarf and wall I) may occupy reversed positions, the sleeve lying within the wall b.

y rIo exclude the dust, an annular cap, Gr, is bolted to the top ot the casing K, and has a beveled edge, c, to receive a beveled-edged ring, h, which fits close to the sleeve E, anda packing, m, of leather or other suitable material, is placed between the ring and a ring, a,

bolted to the sleeve E.

The bearing-faces, which may be of any desired form, may be recessed to receive an antifriction facing ot' any suitable character.

The conical bearing insures an absolute centering ofthe shaft A, and prevents any lateralv play and irregular wear ot' the bearing-faces. These faces are prevented from becoming separatedand consequently from wearing irregula'rly, should the shaft expand longitudinally or rise from its step, by the bearing of the liange e upon the ring F, which, as described, would result in the lifting ot" the box B without any separation of the bearing-faces.

I claim- 1. In a bushbearing, the combination of the box K, the bushing B, sliding in the box and provided with an outer conical bearing-faceV 'an adjustiugsleeve, I, for temporarily holding the bushing, substantially as set forth.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

HENRY HEARD.

Witnesses:

W.B. JACKSON, L. SCHEVENELL. 

